Home / 921,200.34-1,380,864.38-381,750.11

Finding the Fourth Proportional to 921,200.34, 1,380,864.38 and 381,750.11

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Solution

The fourth proportional to 921,200.34, 1,380,864.38 and 381,750.11 is: 572,237.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,200.34 : 1,380,864.38 = 381,750.11 : x
  2. Step 2: Convert to fraction form
    921,200.34/1,380,864.38 = 381,750.11/x
  3. Step 3: Cross multiply
    921,200.34x = 1,380,864.38 × 381,750.11
  4. Step 4: Simplify right side
    921,200.34x = 527,145,128,960.08
  5. Step 5: Solve for x
    x = 527,145,128,960.08/921,200.34
  6. Step 6: Final answer
    x = 572,237.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.